OpenInsider covers the US for free. Quiver sells a US-only proprietary API. Bloomberg has it all, for $24k/yr. Sigma sits at the intersection: multi-market, open, backtested, AI-agent ready.
| Capability | Sigma | OpenInsider | Quiver | Bloomberg |
|---|---|---|---|---|
| US Form 4 (SEC) | ✓ | ✓ | ✓ | ✓ |
| Non-US filings (27 regulators) | ✓ | ✗ | ✗ | ✓ (paywall) |
| FX-normalised cross-market | ✓ | ✗ | ✗ | ✓ |
| Composite score (open formula) | ✓ | ✗ | propriétaire | ✗ |
| Free interactive backtest viewer | ✓ | ✗ | payant | payant |
| Public REST API | ✓ (free tier) | ✗ | payant | enterprise |
| MCP server (AI-native) | ✓ | ✗ | ✗ | ✗ |
| Entry price | €0 / €39 | $0 | $10+/mo | $24k/yr |
Each month, the simulated portfolio buys the 10 highest-scored insider BUY signals (EU markets) in equal weights, then sells each position 90 days later. Result is net of 0.6% round-trip fees.
Every filing from our 28 regulators (AMF, SEC, BaFin, SIX SER, RNS, SEDI, Consob, CNMV, AFM, FSMA, Oslo, Helsinki, Copenhagen, ASX, FMA, CVM, HKEX, BSE-Sofia, Tadawul, DART, EDINET, SSE, SZSE, SEBI, KNF, PSE, NZX, JSE) flows through our 3-step pipeline, multi-market collection, open composite scoring, signals and alerts (web, API, MCP).
AMF BDIF, SEC EDGAR Form 4, BaFin DDA, SIX SER, RNS/Investegate, SEDI, Consob, CNMV, AFM, FSMA, Oslo Børs, Nasdaq Helsinki, Nasdaq Copenhagen, ASX, FMA/OeKB OAM, CVM, HKEX, BSE-Sofia, Tadawul, DART, EDINET, SSE, SZSE, SEBI, KNF, PSE, NZX, JSE. Each filing is extracted, FX-normalised (multi-currency historical FX), enriched (ISIN/CIK bridge, market cap, sector), and exposed through the same API, within 5 minutes of publication.
Internal backtest on public regulator filings (28 markets). Window Mar 2023 · Aug 2024. T+365 returns from Yahoo Finance EOD prices.
Historical backtest. Returns are indicative; past performance does not guarantee future results. This is not investment advice. CI95 and DSR documented in the methodology.
Backtest coverage: XPAR, XTKS and BVMF prioritised (T+365 returns computed). SEC (US) and LSE (UK) still being processed.
Every reported insider buy across 28 markets, captured at the official source, FX-normalised and scored 0 to 100. You see the signal, the insider's role, the size, and the horizon to hold. In plain language, no jargon.
In practice, you get: live executive buys across 28 markets, scored and ranked, alerts on the strongest signals, each insider's full history, a public API and an MCP server for your AI agents, and the whole backtest open so you can verify it yourself.
100-point score, buy size, conviction, role, market cap, sector momentum. Open formula, reproducible, auditable. No proprietary black box.
Real performance across 1,479,599+ transactions since 2000. Win rate, Sharpe, median return at T+30, T+90, T+365. Data verified on Yahoo Finance. Interactive visualisations.
Documented REST API, no-key free tier. MCP server for Claude Desktop, ChatGPT, Cursor, your AI agents query insider data in a single tool call.
AMF, SEC Form 4, BaFin, SIX SER, RNS, SEDI, Consob, CNMV, AFM, FSMA, Oslo Børs, Helsinki, Copenhagen, ASX, FMA, CVM, HKEX, BSE-Sofia, Tadawul, DART, EDINET, SSE, SZSE, SEBI, KNF, PSE, NZX, JSE, normalised in EUR/USD/local. Harmonised roles, ISIN/CIK bridged. First platform to do it.
Complete history of each insider: all transactions, performance of past buys, personal success rate. An individual track record.
Systematic portfolio based on signals. +17.0% annualized OOS (net) · +2.6% mean per trade (T+90) · 2 of 4 years positive · OOS Sharpe 0.56 (CI95 [-1.25, 2.65], net 0.6% costs) · cross-sectional 0.10 · Alpha -2.2 pts vs CAC 40.
In plain terms: each month we buy the shortlist of highest-scoring executive buys, hold it about 90 days, then rotate. The numbers above are that strategy's result.
AMF, SEC, BaFin, SIX SER, RNS, SEDI, Consob, CNMV, AFM, FSMA, Oslo Børs, Helsinki, Copenhagen, ASX, FMA, CVM, HKEX, BSE-Sofia, Tadawul, DART, EDINET, SSE, SZSE, SEBI, KNF, PSE, NZX, JSE. Every filing normalised by currency and role, exposed through the same API. Other venues (SG, SE, IE) in the pipeline.
Top scored buys · last 60 days · ranked by score then recency · 28 markets
Every signal is backtested against real Yahoo Finance data. Win rate, median return, Sharpe ratio, all calculated on 1,479,599 real transactions since 2000.
Explore backtesting →How the returns are produced
Volume declared, last 90 days
Total volume declared, all time
Join analysts and investors already tracking insiders across 28 listed markets.